Electrical selecting instrument



2 Sheets-Sheet 1.

(No Model.)

A DUPPLER ELEGTRIGAL SELECTING INSTRUMENT.

Patented Sept. 1, 1896..

ATTORN EYJ I (No Model.) 2 Sheets-Sheet 2.

A. DUPPLER. ELECTRICAL SELECTING INSTRUMENT.

No. 566,896. Patented Sept. 1, 1896.

01 j j 3 t,

WITNESSES:

UNITED STATES PATENT EErcE.

ANTON DUPPLER, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO THE ELEC- TRICSELECTOR AND SIGNAL COMPANY, OF EST VIRGINIA.

ELECTRICAL SELECTING INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 566,896, datedSeptember 1, 1896. Application filed February 12, 1895. Serial No.538,076. (No model.)

To all whom it may concern.-

Beit known that I, ANTON DUPPLER, of J ersey City, Hudson county, NewJersey, have invented certain new and useful Improvements in ElectricalSelecting Instruments, of which the following is a full specification.

The accompanying drawings illustrate the invention, of which Figure l isa side view of the instrument IO with one of its supporting-wallsremoved,

taken on line 2 2, Fig. 2, looking in the direction of the arrows; Fig.2,a top or plane View of the instrument; Fig. 3, a perspective view ofthe operating parts of the instrument. Figs. 4, 5, 6, and 7 are views ofthe combinationwheel and guardian-wheel in different positions,illustratingthe operation of the instrument when operated by a truecombination and also when a false combination is attempted. Fig. 8 is aview of the actuatingpawl, showing its operating edge shorter as appliedto the combination-wheel than on the guardian-wheel; Fig. 9, a Viewshowing the inclined plane with projection 011 pawl riding thereon.

The standards or side walls A are erected upon a suitable base andsupport the operating mechanism of the selector.

Upon a shaft B, suitably journaled in the frame, is mounted thecombination-Wheel C. This shaft is provided with aspring, which may becoiled and placed within the drum 0 which exerts its tension against theimpellingpawls and restores the selector to zero at the proper time. Theentire combination is cut mechanically on the periphery of this Wheeland is represented thereon by deep and shallow notches, whose purposewill be more fully explained hereinafter, and when the true and correctcombination of impulses is received by this selector from a transmitterthe entire combination may be worked out upon this single wheel, theinstrument brought to the end of its phase by a current in a single 5direction transmitted through the coils of a single magnet actuating asingle armaturelever, or the same operation may be performed by hand.

D is an electromagnet of the usual form, d

an armature-lever, and d a pawl pivoted to the lever to cooperate withthe combination wheel and impel it to work out the phase of theinstrument. The pawl is provided with the usual spring, whose tension isexerted to hold the actuating or free end of the pawl against theperiphery of the wheel. It'is also provided with a projection (2-3,which slides upon the inclined plane (I and throws the pawl out ofcontact with the wheel at proper times, thus preventing impulses fromthe transmitter, which actuate the armature of the electromagnet, fromturning the Wheel, as will be more fully explained hereinafter. In thisconnection there is a retarding device connected with the instrument anda provision for lost motion which comes into play and performs functionswhich assist in the proper working out of the phase of the instrument.

The retarding device consists of the ratchetwheel E and anchor 6',connected by means of pinion 6 rack 6 pin 6, and arm 0 with thearmature-lever d, and serves at the proper time to retard the movementof the lever. The arm 6 is slotted, as shown at e, and within this slotthe pin 6 on the rack-arm enters and plays therein sufficiently toaccomplish its purpose.

Returning to the inclined plane 01 and the projection 61 on theoperating-pawl d it will be seen that these devices are adjusted witheach other in a way to secure proper cooperation, which may be explainedas follows: The inclined plane is pivoted at (1 Its spring d draws theupper end inwardly until stopped by the set-screw al where it remainsheld. It may have a slight movement outwardly at the top, but when suchmovement is made it returns again to its set position. limit of itsbackward stroke, the parts are in the position shown in Figs. 1 and 3,with the projection 01 above the upper end of the inclined plane.scends, this pawl passes inside of the inclined plane to propel thewheel, or outside to slide upon the plane, throw out the pawl, preventit from impelling the wheel, and leave it standing still, and thesefunctions are effected by the position which the free end of theoperating-pawl occupies to the combination on the wheel. As thecombination is mechanically represented on this Wheel by When thearmature-lever is up to the When the armature-lever de-.

deep and shallow notches in its periphery, the projection d and inclinedplane d are so arranged with each other that when the end of the pawl isin a deep notch and descends its projection d passes inside of theinclined shallow notches are given quickly to be sure that the pawl inreturning to take hold of a shallow notch shall not return far enough topass. the end of the inclined plane, and thus may continue to work uponthe shallow notches by reciprocating wholly inside of the inclinedplane. Between ashallow notchand a deep one there is a space whichallows the pawl to go farther back, and in this case, although theprojection passes beyond the end of the inclined plane, yet indescending it will pass inside, owing to the deep notch, which allowsthe parts to escape. From this it will be seen that this single wheelmay be operated to the end of its phase by the transmissions of impulseshaving long and short intervals between them and operating a singlearmature-lever.

On the shaft of the combination-wheel is placed a crank which turns withthe wheel and controls a circuit by acting upon the brushes 1) b to openor close them, as the case may be, and when this occurs the selector hascompleted its phase and is ready to be returned to zero. instrument astop d, which limits the downward throw of the armature-lever, so thatin each instrument the armature begins its return movement from a fixedposition, being the end of its downward stroke. In the operation of theinstrument an independent checking device is provided and the lostmotion in the parts hereinbefore described performs its service.

Pivoted to a suitable part of the framework is the cl1eck-pawlf,with itsspring to hold it against the wheel, and from the rack 6 projects thepin e which comes against the inner side of the pawl and throws it outwhen the armatu re-lever returns backwardly. WVhen the armature is down,the check-pawl is always in place, checking the wheel, and the armaturemay return back to the distance traveled by the pin in the slot. Withinthis distance the armature may return to allow the actuating-pawl totake hold of a shallow tooth without passing the projection beyond theend of the inclined plane and thus reciprocate to work the wheel, but ifthe pro jection passes above and gets outside it may There is alsoplaced on the slide up and down in response to the impulses within thedistance of the lost motion without throwing out the check-pawl, andthus leave the wheel standing still when once out. Should it go back farenough to pass within, it will either drop into a deep notch or else goback and throw out the check-pawls, releasing the wheel, whose springreturns it to zero.

In the construction of selecting instru ments a trouble has beenencountered which is known among skilled mechanics as creeping over,that is to say, with instruments which work upon a combination andemploy a current of a single polarity a combination may be worked outproperly upon a selected instrument, and yet on lines where manyimpulses are transmitted some one of the other instruments may be setoff by creeping over its course, and to prevent this I have combinedwith the combination-wheel another wheel. The two wheels are separatelyand independently mounted upon the shaft, have separate and independentmovements forward and backward, but both are worked by the samearmature-lever and the same actuating-pawl. They work together in unisonso long as the proper combination is sent out, but when a false movementis given by the actuating device this second wheel advances while theother stands still, and coming to the end of its course first operatesthe devices which throw the combination-wheel back to the end of itscourse, thus preventing it from creeping over. This wheel is, therefore,a movable restoring device, and its function is to look after andprotect the combination-wheel and prevent it from creeping over. It maytherefore be called a guardian device or wheel.

Let us suppose that the entire combination of any instrument isrepresented by sixteen impulses. Hence within this combination theremust be sixteen notches or their equivalent in notches and spaces, thatis to say, if an impulse be represented by a given length on theperiphery of the wheel, then on the combination-wheel there would berepresented forty-four notches, or spaces and notches, as will be seenby viewing Figs. l and 5. First, there are sixteen of the forty-fourparts taken up in the combination proper, which consist of deep andshallow notches separated by spaces of varying lengths. Such notches andspaces may be called the members of the com bination. Then follows aspace equal to six notches, then a ratchet of fifteen teeth, then aspace equal to seven teeth,and the other wheel has the same arrangementwith a slight variation. It begins with sixteen ratchets occupying thespace of the combination on the other wheel. Then follows a space equalto six ratchets. Then follow fifteen ordinary ratchet-teeth and anadditional sixteenth tooth, slightly indented and not so deep as theothers, and then a space equal to six teeth, completing the full numberof forty-four. The number of sixteen impulses,representing thecombination, is not arbitrary. There may be any number.

Both wheels are set upon the shaft in unison with each other and performtheir functions as follows: If the true combination of impulses andspaces are transmitted for a given selector, both wheels start from theposition shown in Fig. 4, with the pawl on the combination-wheel in adeep notch at the beginning of the combination and the other side of thepawl resting in a tooth on the guardianwheel and the check-pawl restingon the space near the end and ready to drop into the notches on bothwheels as soon as they are propelled. Both wheels work together,arriving at the end of the combination in the position shown in Fig. 5.At this point the circuit is closed or opened, as the case may be, andthe work of the instrument performed, when it is only necessary to allowthe armature to go back and lift the check-pawl to restore theinstrument to zero; but in otherinstruments on the line a false impulseor space has been given during the operation of this instrument, andthese are prevented from creeping over as follows: The actuating-pawl iscut out a little on the part which works the combination-whee], as shownat 01 Fig. 8, so that it is a little shorter than the other. At the sametime the check-pawl is a little shorter on the combination-wheel than onthe other. Now it is evident that when short impulses are transmittedwith short spaces between them, where a long space ought to be made, thepawl may still travel inside of the inclined plane, part of it riding onthe space on the combination-wheel without turning it, while the otherside of the pawl would continue to turn the other wheel, which wouldadvance out of its relative position with the combination-wheel, asillustrated in Fig. 6. which shows the guardianwheel at the end of itscourse with its longer check-pawl in the shallow notch, leaving thecheck-pawl on the combination-wheel free from the notches. Now in thisposition the armature returns and on the guardian-wheel its pawl ridesupon the space marked 6. This action throws out the actuating-pawl fromthe combination wheel, and, as its check-pawl is already thrown out,leaves the combination-wheel in the position shown in Fig. 7, free to bereturned to zero by its spring. Thus the combination-wheel can never bebrought to the end of its phase unless the exact counterpart of itscombination is transmitted, as the projection d will either travel onthe inclined plane d leaving it standing still until returned by thebackward throw of the armature, or else the guardianwheel will beadvanced ahead of the combination-wheel until it arrives at the pointwhere its action, in cooperation with the actuating-pawl,will return thecombination-wheel to starting-point.

When the combination-wheel has been returned to starting-point, as abovedescribed, and the actuating impulses from the transmitter have ceased,the armature is drawn back by its retractile spring and actuates thereleasing devices, which restore the guardianwheel to Zero.

What I claim, and desire to secure by Letters Patent, is-

1. In a selecting instrument a movable phase-completing device adaptedto respond to a fixed combination of electrical impulses from atransmitter, and provided with notches, in combination with anelectromagnet, and its armature-lever,and provided with anactuating-pawl arranged to coact with the notches in thephase-completing device, means actuated by a false impulse to throw thepawl out of the notches and means for retaining the phase-completingdevice when the pawl is thrown out.

2. In a selecting instrument a movable phase-completing device adaptedto respond to a fixed combination of electrical impulses received from atransmitter, and provided with a series of deep and shallow notchesconstituting a mechanical representation of the fixed combination ofelectrical impulses, separated by spaces differing in length, incombination with an electromagnet provided with an armature-leverresponding to the impulses to thereby work out the combination, andmeans governed by the length of the pauses between the impulses to allowthe armaturelever to reciprocate without impelling the phase-com pleting device when a false impulse is transmitted.

3. In a selecting instrument a movable phase-completing device adaptedto respond to a fixed combination of electrical impulses received from atransmitter, andprovided with a series of deep and shallow notchesconstituting a mechanical representation of a fixed combination ofelectrical impulses, the shallow notches separated from each other by ashort space representing the pause between short impulses and the deepnotches separated from the shallow ones and from each other by a longerspace representinga longer pause between the impulses, means for workingout the combination controlled by the length of the pauses between theimpulses, and means for preventing the'phase-completing device fromturning when a pause of false length is made between two impulses.

4. In a selecting instrument a movable phase=completing device adaptedto respond to a fixed combination of electrical impulses received from atransmitter and provided with a series of notches separated by spaces incombination with an actuating-pawl cooperating with the notches to impelthe phasecompleting device to the end of its course when the propercombination of impulses is transmitted, and to ride upon the spacesbetween the notches without impelling the phase-completing device when afalse impulse is transmitted, and means for retaining the wheel inposition while the pawl is riding on one ofthe spaces.

5. In a selecting instrument a movable phase-completing device adaptedto respond to a fixed combination of impulses received from atransmitter and provided with a series of notches separated by spaces,in combination with an actuating-pawl cooperating with the notches toimpel the phase-completing device to the end of its course when theproper combination of impulses is transmitted, means for throwing thepawl out of the notches when a false impulse is transmitted, an inclinedplane to receive a projection from the pawl and slide thereon when thepawl is thrown out, and means for retaining the phase-completing devicein position while the pawl is sliding on the inclined plane.

6. In a selecting instrument a movable phase-completing device providedwith a series of deep and shallow notches representing a mechanicalcombination composed of members, said members separated from each otherby spaces differing in length, in combination with impelling mechanismtherefor to cooperate with the notches and thereby impel thephase-completing device to the end of its course, said impellingmechanism having a fixed and limited advance movement and three backwardmovements, viz: a short one for a shallow notch, a longer one for a deepnotch, and a still longer one to return the selector to zero.

7. In a selecting instrument av movable phase-completing device providedwith a series of notches separated by spaces, and constituting amechanical combination of members, in combination with a movablerestoring device provided with a series of successive notches or teeth,each of said devices being separately and independently movable, and anactuating mechanism therefor eommon to both devices, means for holdingthe phase-completing device and'advancing the restoring device when theactuating mechanism is out of a notch on the phase-completing device.

8. In a selecting instrument a movable phase-completing device providedwith actuatin g mechanism therefor and devices for restoring the same tozero in combination with a movable guardian device independently mountedand aetuatin g mechanism therefor, means for operating both devices inunison actuated by working out the proper combi-' nation, or theimpelling mechanism means for operating the same out of unison when animproper combination is attempted, and thereby advancing the guardiandevice to ac tuate the restoring mechanism of the phasecompletingdevice, and prevent it from completing its course.

Signed at New York, in the county of New York and State of New York,this 26th day of January, A. D. 1895.

ANTON DUPPLER.

XVitnesses:

CHAS. W. THOMPSON, F. P. VooRnnEs.

